Synthesis and liquid crystal properties of phthalocyanine bearing a star polytetrahydrofuran moiety

Yeşim H. Gursel; B. Filiz Senkal; Mehmet Kandaz; Fahrettin Yakuphanoglu

doi:10.1016/j.poly.2009.02.038

Synthesis and liquid crystal properties of phthalocyanine bearing a star polytetrahydrofuran moiety

Yeşim H. Gursel
, B. Filiz Senkal
, Mehmet Kandaz^*
, Fahrettin Yakuphanoglu

^*Bu çalışma için yazışmadan sorumlu yazar

Kimya Bölümü

Sakarya University
Firat University

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

32 Atıf (Scopus)

Özet

A new polymeric ligand, 6-(3,4-dicyanophenylthio)-hexyl-2-polytetrahydrofuranacetate (2) and its liquid crystalline polymeric phthalocyanine, 2,9,16,23-tetrakis-{6-(polytetrahydrofuran-2-carboxylate)-hexylthio-phthalocyaninatocobalt(II) (3), {Co[Pc(S-C₆H₁₃OCO-poly-THF)₄]}(CoPcLC) have been synthesized. The ligand and the phthalocyanine, bearing polytetrahydrofuran moieties (poly-THF), were characterized using elemental analysis, FTIR, ¹H and ¹³C NMR, and UV-Vis techniques. CoPcLC (3) promotes a greater interaction between the mesogens, resulting in solution aggregations together with a red-shift in the Q-band in the presence of the soft Ag⁺ ion. The dielectric anisotropy and phase transition temperature values of CoPcLC doped with 4-cyano-4′-n-pentylbiphenyl (5CB) were found to be 7.17 and 40.5 °C, respectively. The dielectrical anisotropy behaviour of the liquid crystals changes from the positive to the negative type. The current-voltage characteristics of the liquid crystals show a non-linear behaviour.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	1490-1496
Sayfa sayısı	7
Dergi	Polyhedron
Hacim	28
Basın numarası	8
DOI'lar	https://doi.org/10.1016/j.poly.2009.02.038
Yayın durumu	Yayınlandı - 10 Haz 2009

Finansman

This work was supported by Research Funds of Sakarya University and TUBİTAK (Project No. TBAG: 108T094), the Management Unit of Scientific Research Projects of Firat University (FUBAP) under Project 1230 and Turkish Scientific and Technological Research Council of Turkey (TUBİTAK) (Project No. 106T406).

Finansörler	Finansör numarası
FUBAP	1230
TUBİTAK	108T094
Turkish Scientific and Technological Research Council of TURKEY	106T406
Sakarya Üniversitesi
Firat University Scientific Research Projects Management Unit

Belgeye Erişim

10.1016/j.poly.2009.02.038

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

@article{561f83f3ebcc4600b3c7622a717573a1,

title = "Synthesis and liquid crystal properties of phthalocyanine bearing a star polytetrahydrofuran moiety",

abstract = "A new polymeric ligand, 6-(3,4-dicyanophenylthio)-hexyl-2-polytetrahydrofuranacetate (2) and its liquid crystalline polymeric phthalocyanine, 2,9,16,23-tetrakis-\{6-(polytetrahydrofuran-2-carboxylate)-hexylthio-phthalocyaninatocobalt(II) (3), \{Co[Pc(S-C6H13OCO-poly-THF)4]\}(CoPcLC) have been synthesized. The ligand and the phthalocyanine, bearing polytetrahydrofuran moieties (poly-THF), were characterized using elemental analysis, FTIR, 1H and 13C NMR, and UV-Vis techniques. CoPcLC (3) promotes a greater interaction between the mesogens, resulting in solution aggregations together with a red-shift in the Q-band in the presence of the soft Ag+ ion. The dielectric anisotropy and phase transition temperature values of CoPcLC doped with 4-cyano-4′-n-pentylbiphenyl (5CB) were found to be 7.17 and 40.5 °C, respectively. The dielectrical anisotropy behaviour of the liquid crystals changes from the positive to the negative type. The current-voltage characteristics of the liquid crystals show a non-linear behaviour.",

keywords = "Cationic, Cobalt, Liquid crystal, Metal-ion sensing, Phthalocyanine, Polymerization",

author = "Gursel, \{Ye{\c s}im H.\} and Senkal, \{B. Filiz\} and Mehmet Kandaz and Fahrettin Yakuphanoglu",

year = "2009",

month = jun,

day = "10",

doi = "10.1016/j.poly.2009.02.038",

language = "English",

volume = "28",

pages = "1490--1496",

journal = "Polyhedron",

issn = "0277-5387",

number = "8",

}

TY - JOUR

T1 - Synthesis and liquid crystal properties of phthalocyanine bearing a star polytetrahydrofuran moiety

AU - Gursel, Yeşim H.

AU - Senkal, B. Filiz

AU - Kandaz, Mehmet

AU - Yakuphanoglu, Fahrettin

PY - 2009/6/10

Y1 - 2009/6/10

N2 - A new polymeric ligand, 6-(3,4-dicyanophenylthio)-hexyl-2-polytetrahydrofuranacetate (2) and its liquid crystalline polymeric phthalocyanine, 2,9,16,23-tetrakis-{6-(polytetrahydrofuran-2-carboxylate)-hexylthio-phthalocyaninatocobalt(II) (3), {Co[Pc(S-C6H13OCO-poly-THF)4]}(CoPcLC) have been synthesized. The ligand and the phthalocyanine, bearing polytetrahydrofuran moieties (poly-THF), were characterized using elemental analysis, FTIR, 1H and 13C NMR, and UV-Vis techniques. CoPcLC (3) promotes a greater interaction between the mesogens, resulting in solution aggregations together with a red-shift in the Q-band in the presence of the soft Ag+ ion. The dielectric anisotropy and phase transition temperature values of CoPcLC doped with 4-cyano-4′-n-pentylbiphenyl (5CB) were found to be 7.17 and 40.5 °C, respectively. The dielectrical anisotropy behaviour of the liquid crystals changes from the positive to the negative type. The current-voltage characteristics of the liquid crystals show a non-linear behaviour.

AB - A new polymeric ligand, 6-(3,4-dicyanophenylthio)-hexyl-2-polytetrahydrofuranacetate (2) and its liquid crystalline polymeric phthalocyanine, 2,9,16,23-tetrakis-{6-(polytetrahydrofuran-2-carboxylate)-hexylthio-phthalocyaninatocobalt(II) (3), {Co[Pc(S-C6H13OCO-poly-THF)4]}(CoPcLC) have been synthesized. The ligand and the phthalocyanine, bearing polytetrahydrofuran moieties (poly-THF), were characterized using elemental analysis, FTIR, 1H and 13C NMR, and UV-Vis techniques. CoPcLC (3) promotes a greater interaction between the mesogens, resulting in solution aggregations together with a red-shift in the Q-band in the presence of the soft Ag+ ion. The dielectric anisotropy and phase transition temperature values of CoPcLC doped with 4-cyano-4′-n-pentylbiphenyl (5CB) were found to be 7.17 and 40.5 °C, respectively. The dielectrical anisotropy behaviour of the liquid crystals changes from the positive to the negative type. The current-voltage characteristics of the liquid crystals show a non-linear behaviour.

KW - Cationic

KW - Cobalt

KW - Liquid crystal

KW - Metal-ion sensing

KW - Phthalocyanine

KW - Polymerization

UR - https://www.scopus.com/pages/publications/65549088424

U2 - 10.1016/j.poly.2009.02.038

DO - 10.1016/j.poly.2009.02.038

M3 - Article

AN - SCOPUS:65549088424

SN - 0277-5387

VL - 28

SP - 1490

EP - 1496

JO - Polyhedron

JF - Polyhedron

IS - 8

ER -

Synthesis and liquid crystal properties of phthalocyanine bearing a star polytetrahydrofuran moiety

Özet

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